Error Analysis of the K-Rb-Ne Comagnetometer Space-Stable Inertial Navigation System.

According to the application characteristics of the K-Rb-Ne comagnetometer, a space-stable navigation mechanization is designed and the requirements of the comagnetometer prototype are presented. By analysing the error propagation rule of the space-stable Inertial Navigation System (INS), the three biases, the scale factor of the -axis, and the misalignment of the - and -axis non-orthogonal with the -axis, are confirmed to be the main error source. A numerical simulation of the mathematical model for each single error verified the theoretical analysis result of the system's error propagation rule. Thus, numerical simulation based on the semi-physical data result proves the feasibility of the navigation scheme proposed in this paper.